Improvement in sprinkler-heads for watering-pots



. screw. Fig. 4

UNITED STATES PATENT QFFICE. Y

' LORY B. Foss, or Bo 'ron, MASSACHUSETTS.

IMPROVEMENT lN SPRINKLER-HEADS FOR WATERlN'G-P-QTS, &c.

Specification forming part of Letters Patent No. 174,221, dated February 29, 1676; appliiation filed February 1 9, 1876. i

To all whom it may coacern p Be it known thatl, LoRY B. Foss, of Boston, in the county of Suffolk and State of ,Massachiisetts, have invented certain new and and improve the construction of that-class of heads for watering-pots thatare made aopen v for the purpose of cleansing and consists ofa hollow conical screw, to be applied to the coned part of the head, in combination with a similar conical screw formed on or applied to the cap 'or perforated part. I

Figure 1 is an elevation of my invention when incorporated in the head of a wateringpot Fig. 2 is a vertical section of the same. Fig. 3 is a perspective view of the inner is a perspective view of the outer screw.

LetB represent the tubular part of the sprinkler-head, or that part that serves to unite it to the spout of the watering-pot or to the hydrant-pipe. The part 0 is cone-shaped and made of thin metal, to the upper edge of which I'unite a screw-ring, D, Figs. 1, 2, and 4, the screw-thread of which forms a coned helix, as shown, so that the part 0 and ring D form a symmetrical body for the sprinklerhead. The perforated part A of the head is shaped as shown, and has locked into it a conical screw-ring, E,Fig. 2, which fits into the corresponding screw D.

The utility of :thlS invention consists in the fact that, while it can .be readily opened for the purpose of cleansing, its form is pefectly through the head, since the uniting surfaces of the two parts of thescrew draw away from each other upon the slightest turn of the screw, while in the case of a cylindrical screw the uniting surfaces still remain in close contact after the screwis turned. Thus the grit and dirt will still resist the removal of the screw. This feature in a watering-pot head is a very important one, as the parts are very likely to become rusted or cemented together by moisture and dirt.

Having thus described my invention, I

claim- Asa new article of manufacture, a sprinkler-head for watering-pots, when made with a coned body, 0, united to a coned screw-coupling, D E, ,all the parts being formed and united substantially as described, and for the purpose set forth.

LORY B. FOSS.

Witnesses FRANK G. PARKER, WILLIAM EDSON. 

